C++ Strings

String in C++

C++ provides following two types of string representations −

* The C-style character string.

* The string class type introduced with Standard C++.

C-Style Character String

* The C-style character string originated within the C language and continues to be supported within C++.

* This string is actually a one-dimensional array of characters which is terminated by a null character ‘\0’.

* Thus a null-terminated string contains the characters that comprise the string followed by a null.

The following declaration and initialization create a string consisting of the word “Hello”.

To hold the null character at the end of the array, the size of the character array containing the string is one more than the number of characters in the word “Hello.”

char n[6] = {‘H’, ‘e’, ‘l’, ‘l’, ‘o’, ‘\0’};

If we follow the rule of array initialization, then you can write the above statement as follows −

char n[] = “Hello”;

Following is the memory presentation of above defined string in C/C++:

using namespace std;
int main()
	char n[6] = {'H', 'e', 'l', 'l', 'o', '\0'};
   	cout << "string is: ";
   	cout << n << endl;


string is: Hello

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